Sash-fastener.



No. 727,968. PATENTBD MAY 12, 1903.

P. KEILWERTH.

SASH FASTENER.

APPLICATION FILED MAY 26 1902 N0 MODEL.

no. va /396s.

L Patented May 12, 1903.

AT-ENT FFICE.

FRANZ KEILWERTH, OF CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO JULIUS FLEISCHMANN, OF CINCINNATI, OHIO.

SASH-FASTENEFl.

SPECIFICATION forming part of Letters Patent No. 727,968, dated May 12,1903.

Application filed May 26,1902. Serial No. 109,023, (No model.)

character simple in construction, easily manipulated, and constructed in such a way that the person desiring to open or close the sash may release the supporting device with the same hand used in raising or lowering the sash bya pressure of the thumb directed toward the sash; and my invention consists in the parts and in the construction, arrangement, and combinations of parts hereinafter more fully described and claimed.

In the drawings, Figure 1 is a side e1eva-- tion, partlyin section, of myimproved device, showing part of a car-window and its frame. Fig. 2 is a vertical cross-section of the catchreleasing mechanism, taken on the line to w of Fig. 1. Fig. 3 is a vertical longitudinal section of the same, taken on the line 00 0c of Fig. 2. Fig. 4 is a 'plan View of the coarse-pitch screw with its wings, shank, and button. Fig. 5 is a horizontal cross-section on the line y y of Fig. 1, showing the relation of the catch and its receiving-plate. Fig. 6 is a horizontal cross-section on the line 2 z of Fig. 1, showing the relation of the antifriction-roller and its track. Fig. 7 is a vertical cross-section of the antifriction-roller casing on the-line o o of Fig. 6. Fig. 8 is a side elevation of ,the catch-receiving and track plate.

1 represents the window-frame, and'2 the sash. Preferably each jamb of the windowframe hasa metal strip 3 let into and flush with the inner side of the jamb, along which the window-sash moves. The plate 3 is provided with recesses 4 for receiving a pawl 5 normally pressed outwardly by a spring 6. The strip 3 is preferably of metal, having the recesses stamped into the same along one edge thereof, the other edge forming a track 7 for an antifriction-roller 8, hereinafter described. The pawl 5 swings on a pivot 9 in the window-frame.

a U shaped metal frame 10,having ontwardly= projecting flanges 11, the frame beinglet into a recess 12 in the window-jarnb. Oneend of the spring 6 takes about a pin 13, the other resting against an upper extension l l'of'the pawl, thereby normally swinging the pawl outwardly on its pivot into the recesses in Theupper edge ofthe pawl has an inclined face 15, so that the sash may be readily raised without manually retracting the pawl,the inclined face causing the pawl to recede whenengaging the strip between the recesses. The sash may be raised to any desirable height, my construe tion permitting the recesses to be placedclose together,,so' that the sash may be placed at any desirable elevation.

16 is a grip such as is ordinarily used on a car-window for raising the sash.

17 is a coarse-pitch screw sliding in a correspondingly-shaped socket 18 on a plate 19, secured in a recess 20 in the lower sash-rail, a recess 21 to rear of plate 19 receiving the screw when pressed.

' 22 is'a shank. for the screw, and 23 is a has a bearing 24, one half of which is at the edge of the grip 16, the other half at the end of a plate 25, secured immediately above the grip to the lower'sash-rail.

The screw 17 has a wing or wings 26 secured thereto, a Wire 27 connecting a wing with a pawl, there being two wings shownin the drawings, with a pawl at each side of the sash and with the pawls connected with the wings, respectively, of the coarse-pitch screw. The screw 17 is of sufficiently large or coarse pitch so that the Wings may be turned about the longitudinal axis of the screw and retract the pawls against their spring-pressure by a pressure on the screw longitudinallyof that axis, forming an exceptionally convenient means and arrangement for manipulation.

iently applied, the construction being such as v to suggest its mode of operation to the ordinary traveler.

In order to ease the running of the sash, I provide each side with an antifriction-roller 8, mounted in a U-shaped metal frame 31, which in turn is mounted in a second U- shaped metal frame 32, a spring or springs 33 being disposed between the two and urging the inner U-shaped frame and antifrictionroller outwardly. The inner frame is caused to move in straight lines by flanges 34, extending inwardly at top and bottom of the outer frame, as shown in Fig. 7. The outer frame also has outwardly-extending flanges 35, the frames being of such form that they may be readily stamped out of metal. The frame 32 is let into a recess 36 in the sash-stile. The roller runs along the track 7, which is at one edge of the strip 3, the recesses 4 being at the other edge of the strip, so that the catches or pawls 5 and the rollers 8 may be disposed in vertical planes side by side and engage with the same strip without interference with each others functions.

I claim-- 1. In a sash-fastener, the combination with a sash and frame, of a catch between the sash and frame forsupporting the sash at various elevations with relation to the frame and a coarsepitch screw connecting with the catch and retracting the catch by pressure on the screw longitudinally of the screw.

2. In a sash-fastener, the combination with a sash and frame, of a catch between the sash and frame for supporting the sash at various elevations with relation to the frame, and a coarse-pitch screw and socket for the same, with a wing and a connection between the wing and catch, and a head for the screw, constructed and arranged for swinging the wing about the longitudinal axis of the screw and retracting the catch by pressure on the head longitudinally of the screw.

In testimony whereof I have signed my name hereto in the presence of two subscribing witnesses.

FRANZ KEILWERTH. Witnesses:

FRED NUSEKABEL, HERBERT F. HARDEN. 

